Lock.



No. 705,942. Patented July 29, I902.

w. A. MARKEY.

LOCK.

(Application filed Jan. 25, 1900.)

(No Model.)

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UNIT D- STATES PATENT QFFICE,

\VILLIAM ALBERT MARKEY, OF ROSBYSROCK, WEST VIRGINIA.

LOCK.

SPECIFICATION forming part of Letters Patent N 0. 705,942, dated July 29, 1902.

Application filed January 25, 1900; Serial No. 2,746. (No model.)

To aZZ whom, it puny concern;

Be it known that 1, WILLIAM ALBERT MAR- KEY, a citizen of the United States of America, and a resident of Rosbysrock, conntyof Marshall, and State of West Virginia, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification. I

My invention relates to impr'ovementsin door-locks; and it consists inthe novel and particular construction and combination of parts, which will hereinafter be fully described, and particularly pointed out in the claim.

The object of my invention is to provide a lock of simple and durable construction the mechanism of which is not likely to get out of order under ordinary circumstances.

A further object of my invention is to provide a door-lock which may be easily and quickly applied to a door and which will not require that the door to which it is applied be mortised, as is the case with most ordinary locks now in use.

In describing my invention in detail reference is had to the accompanying drawings, in which- Figure 1 is a transverse sectional view of my invention applied to a door, the door and door-frame also being shown insection. Fig. 2 is a plan view of the catch, showing the shank, the sleeve, the spring-for normally maintaining said catch in -p0sition, andits means of engagement with the knob-shaft. Fig. 3 is an end view of the same.

Similar reference-numerals designate similar parts throughout the several figures.

In the drawings, 1 indicates the door, to which the lock-plate 2 is secured on the inner side and edge by means of screws 3. The catch 10, which is clearly shown in Figs. 1 and 2, extends back into the door 1 and is provided with ashort longitudinal slot 11, through which the knob-shaft 12 extends. On the rear end of said catch 10 is a shank 13, which extends into a cylindrical sleeve 11-. Encircling said shank 13 and pressing against the rear end' of said catch 10 at one end and against the end of saidsleeve, 14 at the other is a spiral spring 15. On each side of said catch 10 is a shoulder 16, against which lugs 17, provided on the knob -shaft 12, abut. Knobs 18 are secured on the ends of said knob-shaft 12 by means of set-screws 19. Now, as is obvious, when it is desired to move the catch 10 back out of engagement with the door-frame 20 the knob may be turned in either direction. The knob-shaft 12 turni'ng' therewith will cause one of the lugs 17 to press against the shoulder 16 of the catch and will force said catch against the spring 15 and its shank 13 back into the sleeve 14, and said parts will occupy the positions shown by dottedlines, Fig.1 Itis also obvious that when the knob is released thespring 15 will force said catch back to its normal position. It will be seen from the foregoing description of my invention that in applying my lock to the door it is not necessary to mortise the edge of the door; nor is it desirable that it be mortised. All that is necessary to be done before applying my lock is to bore a round hole in the edge ofthe door, said hole approximating in circumference that of the sleeve 14 on the end of the shank 13. A small hole is then bored through the door from side to side forthe knob-shaft 12, said hole passing through the center of and at right angles to the large hole. The large hole is made of substantially the same circumference as thatof the sleeve 14, so that said sleeve will fit snugly therein to hold the rear end of the catch 10 firmly in place. In placing my lock on the door I first insert the catch 10, having the shank and sleeve thereon, in position in the hole in the edge of the door. I then insert one end of the knob-shaft 12 in the hole and pass it through the slot 11 of the catch, so that the lugs 17 will lie against the shoulders 16. The lock-plate 2 and the plate 29 are then placed in position and secured to the door by means of screws, and, lastly, the knobs 18 are secured on the knob-shaft 12 by means of the set-screws 10.

It will be seen from the foregoing description that I provide an extremely simple, novel, and inexpensive lock of the character described which may be easily and quickly applied to a door without causing the defacement thereof, which is usually necessary when the door is mortised in applying the ordinary lock. It is also apparent from the simplicity of its construction that there is practically no liability of the lock getting out of order from any ordinary cause.

I have shown my invention in what I consider to be its simplest form; but it is obvious that many mere mechanical changes may be made in its construction without departing from the spirit or scope thereof. Hence I do not desire to limit myself to the precise construction shown.-

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination with a doorhavinga round hole in the edge thereof, a spring-catch pro- WILLIAM ALBERT MARK EY.

Witnesses:

ELBERT MITCHELL, WILL F. CROW. 

